Bus Cutaway vs Full Size bus
So my name is Miguel and I am a magical gnome who's in the game for a bus to convert to a mobile boutique/workshop/living situation. I'm currently looking for more information comparing the pros and cons of say a cabover/cutaway bus vs a flat nose or full nosed larger bus. I'm curious about handling, speeds, general driving information. I don't want to discredit these f350 type buses just because I'm not familiar with them.
The idea is find a bus that's about 9 rows (35pas) that I can travel around in on highways as well as some off-roading. Ultimate vision is to place another vehicle on top for a sleep area. I've seen the cutaways with attached roofs, but is there something more that I should know other than it's doable in terms of these kinda short buses? Any help available? Thank you!